Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 301 · 40 questions

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

1. 1.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
2. 2.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) turmeric powder (d) a battery cell
4. 4.⚙️ Which of these uses a pulley? (a) a well pulley (b) a bottle opener (c) a crowbar (d) a see-saw
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
7. 7.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
8. 8.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) the lifting height (d) how hard we must pull
10. 10.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets longer (d) it gets wet
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) turmeric powder (d) coins as the load
12. 12.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) string (d) a small paper cup
14. 14.True or false: a crowbar is a lever. (a) False (b) True
15. 15.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) turmeric powder (d) a pencil
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a pencil (d) a mirror
18. 18.True or false: a well pulley uses a pulley. (a) True (b) False
19. 19.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
20. 20.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
21. 21.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) string (d) a balloon
23. 23.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the bench (c) on the blackboard (d) on the flagpole
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a battery cell (d) coins as the load
26. 26.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) an empty thread reel (c) coins as the load (d) string
30. 30.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a ramp (c) a crane (d) a tap handle
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) turmeric powder (d) string
32. 32.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
33. 33.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
34. 34.True or false: a see-saw is a lever. (a) False (b) True
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
37. 37.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a steering wheel (c) a well pulley (d) a slide
38. 38.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) turmeric powder (c) an empty thread reel (d) coins as the load
40. 40.True or false: a see-saw is an inclined plane. (a) True (b) False

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